Valve.



w. L. osBoRNB.

VALVE.

APPLIOATION'I'ILBD 00T. 18, 1911. 1,070,720. r Patented Aug. 19, 1913. 2Sumava-snm 1.

w. L. OSBORNE.

y VALVE. APPLICATION FILED OCT-18,1911.

' lmanned Aug. 19,1%

2 SHEETS-SHEET 2.

. agovfogveo.

mitm 1.1mm p'snoxmn, `or' cinismo, rumors.'

VALVE.

Specification or Letters Patent. Applioamn ewa censuras, 1911.-seriarnowsiy'ni ,Patented aug.. 19,1913.

To all whom, it may concern:

Be it known that 'I, WmmAM Lfsnolnaia, a citizen; of the .United States,and' a-resident of Chicago,in the eountyof'Cook andfState of Illinois,havei-nven'ted certain new and useful lImprovemen'ts in `Valves; and dIdo hereby declare l*that the following is a full, clear, land exactdescription thereof, reference beine` had to the-aecompa-n ing draw-.i1-lgs, Ian Ito fth'efcharacters o reference marked thereon, which form.a part'of this speciiication.

'This invention relates to improvements in. valves, and refersniorespecifically to imA p'ovements designed'to'protectthe'valve and dy seatsfrom the wearing action-of high' pressurediuids passing through thevalves.

Theinventionconsists inthe matters hereinater set iorth and moreparticularly pointed out in the appended claims.

Figure 1 is a view partially in side elevation and a-rt-ially in axialsection of a val-ve femb ing my invention. lFig. 2 is an enlargedyragmentary section offtheparts which carry the valve and body seats,respectively, showing the valve partly open. Fig. 3 is a similar viewshowi 'the -va-lve fully open. F ig. 4 is a view similar to Fig.

3, showing a modification of the valve piece.

My improvements are herein shown as applied to -a globe valve of commonform, but may be applied to other forms of valvesV having a closuregenerally similar to 'that herein shown. The valve body 10 is pro-Ivided -with flanged branches 1'1, 1l and between said branches adiaphragm 12 having a horizontally apertured portion 13 which carries'the usual annular bod seat.` The body seat 14 is herein shown as formedon a screwsthreaded ring 15 which is exteriorly screw-threaded to-engagethe screwthreads of the a ertured diaphragm, andv said ring isprovi ed with a vflange-16 which fits over thehorizontal portion ofthediaphragm outsidethe a erture therein-to limit its movement into saidaperture. The seat herein shown is conical and is formed on theupper,inner surface of the'ring.

The valve piece 17 has a swiveling conn nection with the screwsthreadedstem 18 in a well known manner Which'latter eXtends outwardly through`the bonnet 19 of the valve casing and is screw-threaded to fengage thescrew-threaded ynut-or'portion 20 carried bythe arms 21 of said bonnet.The

*Stem is provided at its outer end with a' hand wheel'22 by which itisturned to raise the -v'alve 'piece from -andiower it toward the vbodyAseat.

The valve piece maybe provided with a guide stem 24 which extendsdownwardly rom an axial screw-threaded socket on the under side of thevalvepiece to Iengage a' bea-ring 25 carried by 'the spider arms 26,

26 which,as herein shown, are made integral with the body. seat ring'15. The valve seat 28 which is formed on or carried by the valve pieceto coperate with the body seat .is herein shown as made conical tocorrespond vwith the angle of the body seat. The 'said valve piece islprovided on its lower side with a cylindric projection 30 which isadapted to extend into and closely fit and lill a restricted` portion 31of the opening in the body seat opening, the clearance between theperiphery of said projection and the restricted opening being such as tosubstantially but not wholly out off vthe flow of the iiuid through thespace around the projection vat a time when the projection is containedwholly or partially within the valve opening. The projection 30 extendssuch a dist-ance beyond the valve seat 28as`to enter said restrictedportion 31 of the valve opening and to cut off or throttle thelow of theHuid through the valve at a time when'the valve seat is spaceda-substantial distance away from the body seat,in the closing movementof the valve, as indicated in Figs. 3 and 4, and to leave suchrestricted opening only after the valve seat hasgbeen :lifted asubstantial distance away from the .body seat.

The valve piece is provided radially within the valve seat 28,and-between the valve seat, `and said projection, with an annularpressure reducing chamber 33 of substantial dimensions. rThe upper wall34; of said :chamber is transversely concave, and the f :outer side ofthe curved wall of said chamfber is disposed a distance radially outside:the circular periphery of the projection 30. The projection 30is notintended to *consti-tute the seating or closing portion of the valve,but is provided to protect the valve and' body seats from the wiredrawing a'ction of the fluid passing-through the valve when the valve isslightly open, that is to say, when the valve seat is removed but aslight distance from its seat, either in the opening or the closingmovement of the fvailve. I'The 'bod-y seatring -15 is formed between the-body 'seat andthe restricted portion of the valve opening withatransversely curved, lupwardly flaring portion 15 which serves toenlarge the pressure reducing chamber 33and to properly divert the fluidto the space between the separated valve and body seats. sists to guidethe 'projection into the restricted portion of the valve opening. Theoperation of said projection, in combination with the chamber 33thereabove to effect the foregoing results will be understood from anexamination of Fig. 2. Said Fig. 2 show the valve seatl in a positionbut a slight distance from the body seat, such as occurs both in theopening and the closing movements of the valve. If the projection werenot present, the high velocity of the -fluid' passing from one side ofthe valve to the other through the restricted annular v,opening betweenthe seats would have the e ect to rapidly 'wear away or distort saidseats, and thereby quickly impair the eiiiciency of the valve. With theprojection 30 present however, and assuming that the flow f of fluid isupwardly through the valve, in

theposition of the valve shown in Fig. 2,

' the annular jet of fluid issuing from the space. between theprojection and the restricted opening of the valve, strikes the outerside of the upper concave wall of the chamber 33, and the effect of thecurva- 'ture of the wall is to throw or divert the jet inwardly or awayfrom the valve and body seats, as indicated by the arrows in` Fig. 2,the fluid being turned inwardly by the curvature ofthe wall and againdirected loutwardly through said annular jet and j thence to the spacebetween the separated valve and body seats. This diverting action of thefluid, in'connection with the relatively large area of the chamber 33,as compared to the area between the valve and body seats and between theprojection 30 and the restricted valve opening, has the effect to slowdown-the speed o f the iiuid before it passes through the space betweenthe valve and the body seats, so that the jet of fluid which issuesthrough the partly opened valve has little or no `effect to wear theseating faces of the valve.` So long therefore, as .the projection 30remains within the restricted opening of the valve passage, lno directwear of the high speed jet can be impressed upon the valve andI bodyseats,- so that said seats.

are at this' time protected, with the result of greatly lengthening thelife of the valve.

.Theangles of the valve and body seats are so disposed that when ythevalve is in its full opened position, as shown in Fig. 3, the faces ofsaid seats are substantially parallel with the direction of iow oftheactive or cutting zone of the fluid Vissuing through the valve, so'that,also, when the valve is open, with the projection 30 with- Said flaringportiony also asf drawn from tlerestricted part of the valve opening,the seating faces 0f the valve and body seats receive little or no weardue to the passage of Huid over or across the-same.

The angle of the valve and body seatswhich I have found to contributevery efficiently toward this result is sixty degrees from the diametricplane.

In the construction shown in Figs. l, 2

y and 3, the valve piece 17 is shown as made of a single or integralpart, and will usually be made of brass or like material. i

In Fig. 4, I have shown a construction of valve, designed moreparticularly for the larger sizes, in which the valve piece consists ofa cast iron body or backing 36 and the brass facing 37 which is attachedto the cast iron body, in anyI suitable manner, as

by means of the screw-threaded studsl 38. The said facing 37 is formedto provide the valve seat 28 and the projection 30 before referred to.The arrangement of the facing 37 permits the valve piece to bematerially cheapened in its cost of construction, the brass or othermaterial'being only sufficiently massive on which to form the valve seatand projection, while the cast iron body 36 constitutes the backing ofthe relatively weaker metal of the facing. The facing 37 extendsentirely across the backing or body 36 on the under side of the valvepiece, so

as to preclude the passage of fluid from one i also to permit the valvepiece formed by the two parts to flex or spring, for va purposehereinafter described. A further advantage of chambering the valve pieceto produce the pressure reducing chamber 33, when used in a pipingsyste-m for hot fluids, is that the valve piece is thereby slightlyweakened between its marginal portion and its center, so as to permitthe central portion of said valve piece to slightly flex or yield lthevalve piece away from the body seat, such as would occur if the valvepiece be' downwardly when the valve'piece is forced Y v tightly againstthe body seat.

" rigid or none-yielding' between :its central and marginal portions.

The construction shown is capable of some variations within the scope ofthe inven tion, and the invention isv not' limited to the specificdetails illustrated except as here-v inafter made the subject ofspecific claims. E claim as my invention j 1. A valve having an openinglsurrounded by an inwardly facing conical body scat, a movable valvepiece having an outwardly facing conical seat to engage the bod-y seat,

and a cylindric projection on the valve piece adapted to enter andclosely fit and substantially fill a cylindric portion of the openingofI the valve beyond the body seat, and adapted to enter said openingbefore the valve is seated and to leave the opening only 'f after theseats are separated' a substantial distance in the opening of the valve,there being formed in the valve piece between said projection and valveseat an annular chamber, which is shaped to divert a jet of fluid thatis directed into said chamber from the space surrounding saidprojection,'when the valve is partly open, away from the valve seats andthence direct the diverted jet t0- ward the space between the separatedseats.

2. A valve having an opening surrounded by an annular conical body seat,a movable valve piece having a conical seaty to engage the body seat,and a cylindric projection on the valve piece adapted to enter andclosely fit and substantially fill a cylindric restricted part of theopening of the valve beyond the body seat, and of a length tov occupysaid restricted portion of the opening in advance of the seatingmovement of the valve and to remain in said opening after the seats havesubstantially separated, said conical seats being substantially parallelto the path of the active or cutting z'one of the fluid flowing betweenthe seat faces of the open valve.

3. A valve having an opening surrounded by a conical body seat, amovable valve piece having a conical seat to engage the body seat,

and a cylindric projection on the valve piece in advance of the valveseat adapted to enter and closely fit and substantially fill a cylindricportion of the valve opening beyond the body seat, there being formed inthe valve piece between the valve seat and the projection an annularchamber, the upper wall of which is transversely concave, and the outerpart of said concave wall extending radially outside the periphery ofsaid projection, said conical seatsbeing substan-I tially parallel tothe path-of the active or cutting zone of the fluid flowing between theseat faces of the open valve.

4. A valve comprising an annular conical seat, a movable valve piecehaving a conical seatto engage the body seat, a cylindric projection onthe valve piece in advance of the Y'valve seat adapted to enter andclosely fit and substantially fill a cylindric portion of the valveopening beyond the body seat, there being formed in the valve piece beytween the valve seat and the projection an annular chamber, the upperwall of which is transversely concave and the upper part of said concavewall extending radially outside the periphery of said projection, themember' on; which said body seat is formed .having exterior to theperiphery of said projection an annular transversely, concave portionfor the purpose set forth. l

5. A valve having an opening, a ring screw-threaded in sald opening andformed on its upper inner corner` to provide a conicalbody seat andbeyond said seat with a restricted portion and between said seat andsaid restrictedl portion with an annular concave portion, and a movablevalve piece provided with a seat to engage the body seat, and having aprojection .adapted to enter said restricted openin of the ring inadvance of the seatlng 0% the valve plece and substantially filling saidopening, and an annular chamber in the valve piece between the 'seatthereof, and said projection, substantially as described.

' 6. A valve comprising a body having an opening surroiinded by a bodyseat, a movable valve piece'having a seat to engage said body seat,afstem,v centrally engaging said valve piece for moving it toward andfrom the body seat, the valve piece being weakened between its centerandperiphery to permit the central portion of the valve to flex whenforced down on the body seat, and a cylindric projection on the valvepiece adapted to venter and substantially fill a like shaped portion ofthe valve openlng beyond t-he body seat.

7. A valve comprising a body having an I opening surrounded by anannularv seat and a movable valve piece having a seat to yengage thebody seat,said valve piece comprising a cast iron body'or backing, withan actuating stern connected thereto, and a facing extending entirelyacross the body or backing and formed to provide at its periphery thevalve seat and also a projection beyond the valve seat'adapted to enterandv closely fit and substantially fill a restricted part of the valveopening beyond the body seat when the body and the valve seats areseparated a substantial distance.

8. A valve comprising a body having an opening, surrounded by a bodyseat, and a movable valve piece having a seat to engage said body seat,said valve piece com-v prising a cast iron body, with an actuating stemconnected thereto, and a facing extending entirely4 across said body orbacking, said facing being formed to provided a valve seat and also aprojection beyond the valve seat adapted to enter and substantially filla restrictedprtro the valve opening beyond as my invention aix mysignature in the the', body seat, land the facing being also presence oftwo Witnesses, this 21st day of 10 formed afrit its perilheliy lvithaihickened September A. D. 1911.

annu-larl an e or ri w ic is tte in a. re- 5 cess in the acking, withmeans engaging- WILLIAM LLOYD OSBOR-NE said thickened vpait to4 fastenthe facing to Witnesses:

the backing. WILLIAM L. HALL,

In testimony, that I claim the foregoing GERTRUDEVE. DOWLE.

